The Future of Unconventional Natural Gas© as an Alternative Energy Resource

Lawrence C. Bonham

Indonesian Petroleum Association

... to be hydrostatic to a depth of 2885 m (9467 ft) with a pressure gradient of 107.4 g/cm2/m (.465 psi/ft). The fluid pressure gradient in the geopressured zone...

Maximizing Efficiency in Haynesville Restimulations: A Case Study in Improving Lateral Coverage to Maximize Incremental Gas Recovery

Andrew Whitsett, James Holmedal, Dick Leonard

Unconventional Resources Technology Conference (URTEC)

..., the Haynesville’s thicker net pay, between 80 and 350 ft, and high reservoir pressure gradient, between 0.85 and 0.90 psi/ft, make it particularly attractive...

Origin of overpressure and pore-pressure prediction in the Baram province, Brunei

Mark R. P. Tingay, Richard R. Hillis, Richard E. Swarbrick, Chris K. Morley, Abdul Razak Damit

AAPG Bulletin

... if the pore pressure observed from wireline formation interval tests, DSTs, or kicks has a gradient greater than 11.5 MPa/km (0.51 psi/ft) or if mud...

Origin and Petrophysical Log Response of Overpressures in the Baram Delta Province, Brunei

Mark R. P. Tingay, Richard R. Hillis, Richard E. Swarbrick, Christ K. Morley

Indonesian Petroleum Association

... in normally compacted sediment to the observed acoustic travel time: Pp = σv-(σv-Ph)(∆tnorm/∆t)x where x is an exponent, Ph is hydrostatic pore pressure...

Overpressure and mudrock compaction in the Lower Kutai Basin, Indonesia: A radical reappraisal

Agus M. Ramdhan, Neil R. Goulty

AAPG Bulletin

... hydrostatic. The circumstances illustrated in Figure 4A, showing constant porosity and pore pressure parallel to the lithostatic stress below the top...

Problem of Conductivity of Fractures

A. N. Guseynov, P. I. Nikitin, B. A. Shapiro

Petroleum Geology: A Digest of Russian Literature

.... The distribution of adjusted formation pressures noted above indicates the presence of an additional gradient of pressure during the process of working...

Effect of Hydrodynamic Conditions on Distribution of Hydrocarbon Pools on the Shelf of Northeast Sakhalin

S. M. Bogdanchikov, T. L. Stytsenko

Petroleum Geology: A Digest of Russian Literature

... on energy of the connate system. Below this in the clayey-siliceous Dagi-Uynin sediments the formation pressure greatly exceeds hydrostatic pressure...

Entrapment of Petroleum Under Hydrodynamic Conditions

M. King Hubbert

AAPG Bulletin

... of measurement. The relation between this rise and the pressure p will be given by the hydrostatic equation EQUATION (5) When this is substituted...

Active-seismic monitoring of pore pressure changes in an analog reservoir

Tanner Shadoan, Jonathan Ajo-Franklin, Jeremy R. Patterson, Tieyuan Zhu

International Meeting for Applied Geoscience and Energy (IMAGE)

... and rough models are not duplicated here but can be found in Mavko et al. 2020. The models assume hydrostatic pressure (P), we replace P...

AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction

David W. Bell

AAPG Special Volumes

... in the shallow-water well follows a hydrostatic gradient, whereas the pore pressure in the deep-water well rises above hydrostatic pressure...

Field trials of bentonite as abandonment material for underground coal gasification wells in Queensland, Australia

A. Shapoval, J. Bunning, S. Hann, C. Johns, A. Sommerfeld

Australian Energy Producers Journal

..., the bentonite plug was pressure tested successfully to 600 psi above hydrostatic pressure and tagged again at 122.3 m. Notably, it is unclear whether...

Abstract: Evidence of Episodic Delivery of Fluids and Gases to the Seafloor and Impacts of Delivery Rate on Surficial Geology (Gulf of Mexico), by H. H. Roberts; #90937 (1998).

Search and Discovery.com

Shallowest Coalbed Methane Accumulation in the West: It’s All About Water and Microbes in the Powder River Basin, by Gary D. Stricker, Romeo M. Flores, Donald A. Klein, Cynthia A. Rice, and Raleigh A. Schmidt; #90052 (2006)

Search and Discovery.com

Review of Conference on Hydrology of Deep Sedimentary Basins: GEOLOGIC NOTES

Parke A. Dickey , Paul H. Jones

AAPG Bulletin

... Angstrom units or more. Such water may behave as a non-Newtonian fluid and have a threshold pressure gradient before it starts to flow. The water...

Thermal and Pore Pressure History of the Haynesville Shale in North Louisiana: A Two-Dimensional Numerical Study; #50857 (2013)

William Torsch and Jeffrey A. Nunn

Search and Discovery.com

... 20 5 10 15 Gates Depth, 1000 ft Depth, 1000 ft Hydrostatic 5 Pore Pressure Tremont 10 15 Fracture Lithostatic 2D Results: Pore Pressure...

A New 1-D Computational Fluid Dynamics Formation Evaluation Model (CFDFEM) During Treatment Injection and Flowback for Perforated Well Completions by Pressure Transient Testing

Srinath Madasu, Avi Lin

Unconventional Resources Technology Conference (URTEC)

.... The pressure gradient is calculated based on the following equation (Melton and Malone, 1964): D ∆P  8V  = AD e   4L D s Where V is the velocity...

Well Cycling Optimization in Liquid Loaded Wells

Prithvi Singh Chauhan, Meher Surendra, Zhuoran Li, Sathish Sankaran

Unconventional Resources Technology Conference (URTEC)

... quantity of liquid accumulates in the wellbore, contributing to increased hydrostatic pressure. The volume of liquid holdup directly affects...

Oil generation as the dominant overpressure mechanism in the Cenozoic Dongying depression, Bohai Bay Basin, China

Xiaowen Guo, Sheng He, Keyu Liu, Guoqi Song, Xunjun Wang, Zhongsheng Shi

AAPG Bulletin

..., that is, fluid pressure in excess of hydrostatic pressure, is common in many sedimentary basins. Much of the world's oil and gas have been generated from...

Geo-Fluid-Dynamic Aspects of Oil-Gas Accumulation in Sub-Salt Sediments of Central Siberian Craton

M. S. Kraychik, O. A. Baboshina

Petroleum Geology: A Digest of Russian Literature

... the coefficient of abnormal formation pressure (Kan), which is the ratio of formation pressure to hydrostatic pressure. The areas with lowest formation...

Size, Spacing, and Opening History of Natural Fractures: Preliminary Results from the El Alamar Formation, Northeastern Mexico

John N. Hooker, Stephen E. Laubach, Autumn Kaylor, Peter Eichhubl, Andras Fall

GCAGS Transactions

... estimate Tt by assuming a hydrostatic fluid pressure gradient; Tt is the temperature at which the hydrostatic gradient intersects the isochore determined...

Application of Satellite Imagery Analysis to Exploration of Oil and Gas Reservoirs

J. H. Bartley

West Texas Geological Society

... accumulation. Other variables are the hydrostatic pressure in each reservoir and the depth of the accumulation below the surface of the earth...

Carbon Dioxide Storage in Abandoned Coal Mines

Andreas Busch, Bernhard M. Krooss, Thomas Kempka, Margret Waschbusch, Tomas Fernandez-Steeger, Ralph Schluter

AAPG Special Volumes

... of CO2 or flue gas might be considered shortly after abandonment of the mine. This results in a low-pressure gradient between the injection...

Stress Fields, A Key to Oil Migration

Jean du Rouchet

AAPG Bulletin

...) acting on the kerogen which has been chemically broken up by oil formation. In sedimentary bodies whose water is at hydrostatic pressure, the migration...

Geology and Oil Productivity of Staryy Sambor Field in the Cis - Carpathians

I. V. Leskiv

Petroleum Geology: A Digest of Russian Literature

.... Formation pressure in the middle of the pool is 490.7 atm; it exceeds the hydrostatic pressure by 140 atm. The oil of the middle Eocene pool has...

Reservoir Fluids

Mike Shepherd

AAPG Special Volumes

... of water within the oil leg, which will have a hydrostatic pressure gradient controlled by the water density. The oil is located in the remaining pore...